Ventilation and heat dissipation LED lamp

The invention discloses a ventilation and heat dissipation LED lamp. The ventilation and heat dissipation LED lamp sequentially comprises a hoisting ring, a mounting seat, a radiator, a reflecting shade, an LED light source structure and a light-transmittable shade from the top to the bottom, wherein the hoisting ring can be used for hanging mounting, the mounting seat is mounted at the lower end of the hoisting ring, the radiator is mounted at the lower end of the mounting seat, the reflecting shade is connected to and fixed at the lower end of the radiator and plays a reflecting and light guiding effect and a heat dissipation effect, the LED light source structure is fixedly arranged at the top inside the reflecting shade, the light-transmittable shade is connected to and fixed on the reflecting shade and arranged on the LED light source structure in a covering manner, the radiator comprises a central column which is internally hollow, and a plurality of radiating fins extending outward from the central column, and the mounting seat is clung to and fixed at the upper end of the central column; a plurality of first heat dissipation holes are formed in the mounting seat, second heat dissipation holes corresponding to the first heat dissipation holes and being communicated with the first heat dissipation holes are formed in the central column, third heat dissipation holes corresponding to the second heat dissipation holes and being communicated with the second heat dissipation holes are formed in the top surface of the reflecting shade, and the first heat dissipation holes, the second heat dissipation holes and the third heat dissipation holes are communicated with one another so as to form a ventilation and heat dissipation structure; and the mounting seat, the radiator and the reflecting shade are all made of heat conducting metal.